My nephew logged into my mother's iPad after he stole it. We recovered the iPad in his possession but cannot log his apple iCloud id out because he refuses to provide his password. ...I can't even disable "find my iPhone!"
Activation Lock Problem
It requires the Apple ID and password of the previous owner. If you don't have it and cannot get it, then the device is useless to you. Return it for a refund, if you can, or take it to an Apple store for an exchange provided they will help you.
Find My iPhone Activation Lock
If you can't activate your iPhone - Apple Support
Perhaps if you have him arrested he may become more pliable.
How do I remove someone's icloud account from my ipad without their password?
